87 Fr Francium 223.0 u

Francium

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周期
7
族
1
ブロック
s-ブロック
相 (STP)
Solid

Francium is the most unstable of the first 101 elements. It is extremely rare in nature, with at most 30 grams in Earth's crust at any time.

物理的特性

原子質量 223.0 u
STPにおける相 Solid

電子的特性

電気陰性度 0.7

電子配置

配置 [Rn] 7s¹

Electron Shell Configuration

Francium electron shell configuration Fr 2e⁻ 8e⁻ 18e⁻ 32e⁻ 18e⁻ 8e⁻ 1e⁻

Position in Periodic Table

Francium position in the periodic table Fr

ブロックと周期

ブロック

s p d f

周期

1 2 3 4 5 6 7

周期表

ランタノイド アクチノイド

アルカリ金属 をもっと見る

3 Li Lithium 11 Na Sodium 19 K Potassium 37 Rb Rubidium 55 Cs Cesium

Frequently Asked Questions

What is Francium?
Francium (Fr) is a chemical element with atomic number 87. It is a solid at standard temperature and pressure, classified as a アルカリ金属.
What are the key properties of Francium?
Francium has an atomic mass of 223.0 u.
What is the electron configuration of Francium?
The electron configuration of Francium is [Rn] 7s1. It is in the s-block of the periodic table.
What is the electronegativity of Francium?
Francium has an electronegativity of 0.7 on the Pauling scale.